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Thread: Mac won't boot

  1. #1

    Member Since
    Jan 09, 2011
    Mac won't boot
    My Mac won't boot and it is showing a prohibitory sign followed by a flashing folder with a question mark. Please help/

  2. #2

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    iMac i5 2.7GHz, 16GB memory, OS 10.11
    G'day and welcome to the forums.

    Try this first:-

    Mac OS X: Gray screen appears during startup

    It is easier to offer help if you provide machine details and operating system.
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

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